Hey folks, I have been scouring the internets looking for a suitable connector for a new roof rack application, and have been coming up empty. I am tempted to design and mold the things myself, but keep thinking this is so common surely someone has already developed this. So if anyone has a good source for these, or can point me to one, I'd sure appreciate it.. and would make it worth your while!

here are the specs:

-must fit 1" OD pipe. could also fit 25.4mm pipe
-must be split in the middle- this needs to be able to be installed last, can be threaded on during assembly.
-can be plastic (GF Nylon or similar) or metal (steel). black color would also be nice.
-reasonably priced, and readily available. US made is preferred!